Innovation

[Mavrelos, Antonios]

                   Microsoft Research Innovations Enhance Windows 2000

                   REDMOND, Wash., Feb. 28, 2000 -- Three years ago, Bill
Bolosky and
                   two Microsoft colleagues were brainstorming technology
advances when
                   an idea occurred to them -- why not save operating system
disk space
                   by storing duplicate files as links that point to a
single file housed in a
                   central location?

                   Not only would this save storage space, they reasoned; it
would also
                   result in substantial performance improvements. Moreover,
it would
                   make it faster for information technology (IT) managers
to install
                   computers for new employees since they'd no longer be
required to
                   copy massive amounts of data each time they set up a new
desktop.

                   The three sent a memo to Microsoft Chairman Bill Gates
outlining the
                   idea. Both Gates and the Windows 2000 product team liked
the
                   proposal, and the Windows team asked Bolosky if he could
develop the
                   feature himself. During the next 1-1/2 years, Bolosky, a
researcher in
                   Microsoft Research's Systems and Networking Group, and
three of his
                   researchers worked full time with the Windows 2000 team
to build the
                   technology, now known as the Single Instance Store. 

                   "The Single Instance Store recognizes that there's
duplication,
                   coalesces the extra copies and stores the bits once
instead of several
                   times," Bolosky said. "So if you have 10 files with the
same exact bits,
                   instead of storing this data 10 times, it stores it once.
It frees up a lot
                   of space, and you realize performance improvements on the
server."

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